CVE-2025-25034
CVE-2025-25034 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.
Key facts
- Severity: Critical (CVSS 4.0 base score 9.3)
- EPSS exploit prediction: 3% (86th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-18782
- Weakness: CWE-502
- Published:
- Last modified:
Description
A PHP object injection vulnerability exists in SugarCRM versions prior to 6.5.24, 6.7.13, 7.5.2.5, 7.6.2.2, and 7.7.1.0 due to improper validation of PHP serialized input in the SugarRestSerialize.php script. The vulnerable code fails to sanitize the rest_data parameter before passing it to the unserialize() function. This allows an unauthenticated attacker to submit crafted serialized data containing malicious object declarations, resulting in arbitrary code execution within the application context. Although SugarCRM released a prior fix in advisory sugarcrm-sa-2016-001, the patch was incomplete and failed to address some vectors. Exploitation evidence was observed by the Shadowserver Foundation on 2024-09-13 UTC.
Frequently asked questions
- What is CVE-2025-25034?
- A PHP object injection vulnerability exists in SugarCRM versions prior to 6.5.24, 6.7.13, 7.5.2.5, 7.6.2.2, and 7.7.1.0 due to improper validation of PHP serialized input in the SugarRestSerialize.php script. The vulnerable code fails to sanitize the rest_data parameter before passing it to the unserialize() function. This allows an unauthenticated attacker to submit crafted serialized data containing malicious object declarations, resulting in arbitrary code execution within the application context. Although SugarCRM released a prior fix in advisory sugarcrm-sa-2016-001, the patch was incomplete and failed to address some vectors. Exploitation evidence was observed by the Shadowserver Foundation on 2024-09-13 UTC.
- How severe is CVE-2025-25034?
- CVE-2025-25034 has a CVSS 4.0 base score of 9.3, rated critical severity.
- Is CVE-2025-25034 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-25034?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-25034 have an EU (EUVD) identifier?
- Yes. CVE-2025-25034 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18782.
- When was CVE-2025-25034 published?
- CVE-2025-25034 was published on 2025-06-20 and last updated on 2026-06-17.
References
- https://karmainsecurity.com/KIS-2016-07
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/sugarcrm_rest_unserialize_exec.rb
- https://vulncheck.com/advisories/sugarcrm-php-deserialization-rce
- https://web.archive.org/web/20160508053502/http://www.sugarcrm.com/security/sugarcrm-sa-2016-001
- https://web.archive.org/web/20160725194502/http://www.sugarcrm.com/security/sugarcrm-sa-2016-008
- https://www.exploit-db.com/exploits/40344
- https://www.sugarcrm.com/crm/
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